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-R. PARRY. v

. Ore Concentrator.

N0. 243,607. H Patented June 28,1881. v

flap/M: I QWM WW BY M v ATTORNEYS.

UNITED STATES PATENT ()FFICE.

ROBERT PARRY, on ALPINE, COLORADO.

ORE-CONCENTRATOR.

SPECIFICATION'forming part of Letters Patent No. 243,607, dated June 28,1881. Application filed March 29, 1881. (ModeL) To all whom it mayconcern:

Be it known that I, ROBERT PARRY, of Alpine, in the county of Ohafi'eeand State of Colorado, have invented a new and ImprovedOre-Concentrator, of which the following is a specification.

The invention consists in diaphragm-movingbars combined with adjustabletops, whereby the motions of the diaphragms may be in- I0 .creased ordiminished, as hereinafter described.

Figure 1 is a plan of the device with parts removed and parts brokenaway to exhibit other parts. Fig. 2 is a side elevation, partly insection, on line 00 m, Fig. 1. Fig.3 is a side elevation with partsremoved, partly in section, on line y y, Fig. 1. Fig. 4 is a sectionalend elevation on line .2 2, Fig. 1.

Similar letters of reference indicate corresponding parts.

In the accompanying drawings, A represents the jig-box, which mayconsist of any number of compartments, D, and in this instance consistsof three, that are separated from each other by the vertical partitionsB B.

2 5 Each compartment D is partially subdivided by a longitudinalvertical partition, 0, that extends downward from the top of the box A.Thus, 'in plan, six rectangular openings are formed, three on each sideof the partition O.

In each of the openings on one side of the par- 4 tition O is fixed ahorizontal partition, E, that fills said opening and is provided with acentral aperture, to, covering which is an elastic diaphragm, F, ofleather, rubber, or the like,

that is secured on top of the partition E by bolts 1), or other suitabledevice. Above the diaphragms F beams G are secured longitudinallybetween the partitions B B and ends of the box A, and serve. to supportthe journal- 0 boxes G of the upright bars H, whose lower enlarged endsrest on the centers of the diaphragms F, and whose upper ends or tops,0, are within reach of the cams L. The tops 0 of the bars Hareadjustable, so as to lengthen 5 or shorten said bars H, and therebyincrease or diminish the movements of the diaphragms F, and are securedthereon by set-screws d.

On the top of the box A are fixed standards K, that support the shaft L,which carries the cams L.

L represents the pulley keyed on the shaft L, through which power isapplied to revolve the shaft L, for the purpose of bringing said cams Lin contact with the. tops of the bars H, and thereby giving motion tothe diaphragms F.

The lower part of each compartment D is furnished with sloping sides ffand back g, which come to a point in the bottom of the box A, and atthis point an ore-discharge opening, h,is made in the front of the boxA, and closed by a valve, h.

- In the openings on the opposite side of the partitions G from thediaphragms F the sieves M are fixed at a higher elevation than said 65,diaphragms F, said sieves M being composed of a barred frame, m, andscreen it. An opening, N, for the overflow of the water from theconcentrator is made in one end of the box A, above the level of thesieves M, and on the same side with them of the partitions C.

It is designed to introduce water for the operation of the concentratorat any convenient point in the lower part thereof.

In operating this device the compartments D thereof are filled withwater, and the shaft L is put in motion, so that the cams L shall strikethe bars H, and thus impart motion to the diaphragms F, whereby anintermittent stream of water is forced upward through the sieves M. Orebeing now fed upon said sieves M will, according to its specificgravity, settle on and pass through the said sieves M, and falling willbe discharged through theopeuiug h, while the lighter gangue will becarried off by the upward flow and pulsations of the water through theoverflow N. The upward movements of the diaphragms F, being due to theirelasticity and the upward pressure of the water beneath them, are socomparatively slow that they cause too feeble a current down through thesieves M to draw the gangue down through them hence the concentration ofthe ore is made very thorough. 9

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- In an ore-concentrator, the combination, with.the diaphragmmoving bars H, of the adjustaroo ble tops 0, substantiallyas herein shown and described, whereby the motion of the diaphragm maybe increased or lessened, as set forth.

ROBERT PARRY. Witnesses:

FRANCIS 0. DAY, W. S. STONE.

